diff options
Diffstat (limited to 'source/compiler/asloperands.c')
| -rw-r--r-- | source/compiler/asloperands.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/source/compiler/asloperands.c b/source/compiler/asloperands.c index a4781ed4335da..172f347063bcf 100644 --- a/source/compiler/asloperands.c +++ b/source/compiler/asloperands.c @@ -657,6 +657,7 @@ OpnDoRegion ( ACPI_PARSE_OBJECT *Op) { ACPI_PARSE_OBJECT *Next; + ACPI_ADR_SPACE_TYPE SpaceId; /* Opcode is parent node */ @@ -664,9 +665,10 @@ OpnDoRegion ( Next = Op->Asl.Child; - /* Second child is the space ID*/ + /* Second child is the space ID */ Next = Next->Asl.Next; + SpaceId = (ACPI_ADR_SPACE_TYPE) Next->Common.Value.Integer; /* Third child is the region offset */ @@ -677,7 +679,13 @@ OpnDoRegion ( Next = Next->Asl.Next; if (Next->Asl.ParseOpcode == PARSEOP_INTEGER) { + /* Check for zero length */ + Op->Asl.Value.Integer = Next->Asl.Value.Integer; + if (!Op->Asl.Value.Integer && (SpaceId < ACPI_NUM_PREDEFINED_REGIONS)) + { + AslError (ASL_ERROR, ASL_MSG_REGION_LENGTH, Op, NULL); + } } else { |